FDA Adverse Event Malfunction Summary report: N

LIFEVEST WCD 4000 SYSTEM

MDR report key: 23511953 · Received November 10, 2025

Report

Report Number
3008642652-2025-10909
Event Type
Malfunction
Date Received
November 10, 2025
Date of Event
November 7, 2025
Report Date
November 10, 2025
Manufacturer
ZOLL MANUFACTURING CORPORATION
Product Code
MVK
UDI-DI
00855778005135
PMA / PMN Number
P010030
Product Problem
Yes
Report Source
Manufacturer report
Reporter Location
PA, US
Reporter Occupation
OTHER

Narratives

Additional Manufacturer Narrative · 0

DEVICE EVALUATION OF ELECTRODE BELT HAS BEEN COMPLETED. THE REPORTED PROBLEM (ECGS NON-FUNCTIONAL) WAS CONFIRMED DUE TO THE LEAD 1- WIRE BEING BROKEN NEAR THE BELT JST CONNECTOR. THE ROOT CAUSE FOR THE BROKEN WIRE WAS UNABLE TO BE POSITIVELY IDENTIFIED. THE ELECTRODE BELT IS DESIGNED TO MEET THE MECHANICAL REQUIREMENTS OF IEC 60601-1. THERE WAS NO ADVERSE EVENT THAT RESULTED FROM THE DAMAGED BELT.

Description of Event or Problem · 0

A US DISTRIBUTOR REPORTED THAT AN ELECTRODE BELT HAD NON-FUNCTIONAL ECGS.

Devices

Seq Brand Generic Product Code Manufacturer Model Lot UDI-DI
1902206 LIFEVEST WCD 4000 SYSTEM WEARABLE CARDIOVERTER DEFIBRILLATOR MVK ZOLL MANUFACTURING CORPORATION LIFEVEST WCD 4000 SYSTEM 00855778005135

Patients

Seq Age Sex Outcome Treatment
1 NA Unknown